Thanks for the info.
I have a PCI-E 1.0 MB too, and just ordered a GF 9800 GTX+ to replace my outdated GF 6800 ultra.

I was a little scared updating my gfx card to a newer one wouldn't make much difference on this motherboard (Gigabyte K8N-Pro Sli). Hopefully the upgrade is enough to run some of the newer games a bit better.